What is "shushandukht"

Shushandukht was the wife of Yazdegerd I and mother of Bahram V. She was the daughter of a Jewish exilarch. She created the Jewish neighborhood in the city of Isfahan. She also established Jewish colonies in the cities of Shush ( Susa) and Shooshtar. The existence of a Jewish queen enhanced the life of Persian Jews and during this period Jewish Exilarchs had regular attendance to the Shah's court. Some authors such as Ernst Herzfeld have speculated that the tomb of Esther and Mordecai in the city of Hamedan might be the tomb of Shushandukht.